PHP Utils: Provide general purpose functionality

This class provides general purpose functionality for PHP scripts. Currently it can:

- Encode and decode UTF-16 strings
- Generate SQL statements for searching for values in tables from given parameters
- Convert HTML document to text
- Clear array values
- Generate MySQL full search queries
- Get IP information from whois server
- Lock MySQL database tables
- Check if tables are present in a database
- Generate form to search for Ebay sales
- Get the name of a month
- Compare two class objects
- Get the current user Internet Explorer browser version
- Convert text lines breaks into HTML line breaks
- Search for MySQL databases by name
- Etc.